I found this novel moving. McCarthy's simple, direct, spare writing, his reticence in describing the cause of the catastrophe, his depiction of the father's love of the boy and
growing desperation when trying to protect the boy while aware he himself was dying, and the rift in their relationship as the boy realizes his father may not be one of the "good guys,"
all that was very effective.
If I have any quibble, it's a fairly small one: This tone of The Road
reminded me of the catastrophe movies of the late 1970s and early 1980s, like "The Day After" and "Testament." I mentioned to a couple of people it's the most powerful late '70s disaster novels I've read because it concentrates on the human cost of man-made apocalypse.